EP0980852A1 - Appareil de fabrication de ciment - Google Patents

Appareil de fabrication de ciment Download PDF

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Publication number
EP0980852A1
EP0980852A1 EP99905266A EP99905266A EP0980852A1 EP 0980852 A1 EP0980852 A1 EP 0980852A1 EP 99905266 A EP99905266 A EP 99905266A EP 99905266 A EP99905266 A EP 99905266A EP 0980852 A1 EP0980852 A1 EP 0980852A1
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EP
European Patent Office
Prior art keywords
raw material
unit
cement
clinker
chlorine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99905266A
Other languages
German (de)
English (en)
Other versions
EP0980852A4 (fr
EP0980852B1 (fr
Inventor
Tatsuo Taiheiyo Cement Corp. ANZAI
Hiroshi Taiheiyo Cement Corp. OBANA
Yasushi Taiheiyo Cement Corp. YAMAMOTO
Takashi Taiheiyo Cement Corp. NAKANO
Yoshiaki Taiheiyo Cement Corp. TUCHIDA
Tomonobu Taiheiyo Cement Corp. UWABO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiheiyo Cement Corp
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Taiheiyo Cement Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiheiyo Cement Corp filed Critical Taiheiyo Cement Corp
Publication of EP0980852A1 publication Critical patent/EP0980852A1/fr
Publication of EP0980852A4 publication Critical patent/EP0980852A4/fr
Application granted granted Critical
Publication of EP0980852B1 publication Critical patent/EP0980852B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/60—Methods for eliminating alkali metals or compounds thereof, e.g. from the raw materials or during the burning process; methods for eliminating other harmful components
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/364—Avoiding environmental pollution during cement-manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the present invention relates to an apparatus for the production of cement, and particularly to an apparatus for the production of cement in which wastes are used as a cement raw material.
  • Wastes contain metal pieces, moisture, heavy metals, chlorine, alkalis, and dioxins.
  • the present invention has an object to provide an apparatus for the production of cement capable of making harmful materials contained in wastes harmless, producing cement using wastes as a raw material, thereby recycling the wastes as a resource, and giving cement having a quality comparable to general Portland cement.
  • the apparatus for the production of cement according to the present invention in which wastes are used as raw materials, is equipped with a drying pre-treatment unit for removing iron pieces and moisture, a raw material grinding unit for grinding at least one kind of a component modifier such as limestone, alumina, clay and iron raw materials, and at least one kind of wastes (hereinafter, referred to as a raw material), a raw material preparing and blending unit for mixing the raw material in a predetermined proportion, a burning and cooling unit for burning the raw material to form a cement clinker, a product grinding unit for mixing and grinding the clinker and gypsum, and optionally adding a setting modifier, to produce cement, and an exhaust gas treatment unit for quenching an exhaust gas generated from the burning and cooling unit to suppress re-synthesis of dioxins, as well as making the exhaust gas harmless.
  • a drying pre-treatment unit for removing iron pieces and moisture
  • a raw material grinding unit for grinding at least one kind of a component modifier such as limestone, alumina, clay and
  • the apparatus may be comprised of a chlorine and alkali adjustment unit for adjusting chlorine and alkali contents in the clinker, to thereby adjust the chlorine and alkali contents in the raw material before burning.
  • a chlorine and alkali adjustment unit for adjusting chlorine and alkali contents in the clinker, to thereby adjust the chlorine and alkali contents in the raw material before burning.
  • chlorine sources are added to the raw material
  • alkali sources are added to the raw material.
  • the apparatus may further be comprised of a dioxin decomposition unit for collecting dusts generated from the burning and cooling unit and decomposing dioxins in the dusts under heating. Further, the apparatus may further be comprised of a heavy metal treatment unit for refining heavy metals in the dusts generated from the burning and cooling unit, or may further be comprised of a heavy metal stabilization treatment unit for conducting stabilization treatment of heavy metals in the dusts generated from the burning and cooling unit, and for mixing the same with cement for disposition/disposal.
  • the structure of the apparatus for the production of cement is shown in Fig. 1.
  • the apparatus for the production of cement is mainly comprised of 8 units of a waste drying pre-treatment unit A, a raw material grinding unit B, a raw material preparing and blending unit C, a clinker burning and cooling unit D, a product grinding unit E, an exhaust gas treatment unit F, a dioxin decomposition unit G and a heavy metal refining unit H.
  • the waste herein means at least one kind of incinerated ash of municipal refuses, sludge, shells and the like.
  • the waste drying pre-treatment unit A has a waste yard 1, a crane 2, a waste drawing hopper 3, a hot air oven 4, a rotary dryer 5, a crusher 6, a magnet separator 7, a magnetic selector 8, a sieve 9, an active carbon addition equipment 10, an acidic gas neutralizer (such as slaked lime or sodium carbonate) addition equipment 11, a bag filter 12, a fan 13, and at least one component adjustment feeder 69.
  • the waste is carried by a truck or the like and accumulated on the waste yard 1.
  • the waste is introduced into the waste drawing hopper 3 equipped with a sieve having an opening of 200 mm at the upper portion thereof from the waste yard 1 by the crane 2.
  • the waste is transported to a drying step.
  • bad odor contained in the waste is decomposed by the rotary dryer 5 equipped with the hot air oven 4, and simultaneously moisture contained in the waste is evaporated to decrease the moisture content to 5% or less.
  • iron pieces and the like contained in the waste are removed by the magnet separator 7 or the magnet selector 8, and the waste remained is transported to the raw material grinding unit B.
  • the iron pieces and the like removed by the magnetic separator or the magnetic selector 8 are, after removing adhered dust with the sieve 9, discharged to a pit and then recycled.
  • the dust removed with the sieve 9 is transported to a waste tank 14.
  • At least one kind of component modifiers such as limestone, alumina, clay, and iron raw material is added to the waste from at least one component adjustment feeder 69, if necessary.
  • a method of directly introducing into the waste tank 14 may be used.
  • the component modifier can directly be introduced into the component modifying tank 15.
  • active carbon and acidic gas neutralizer are added to the exhaust gas from the rotary dryer 5 by the active carbon addition equipment 10 and the acidic gas neutralizer addition equipment 11 to adsorb dioxin in the exhaust gas on the active carbon, and also to remove acidic gas, such as hydrogen chloride or sulfur oxides, in the exhaust gas by the acidic gas neutralizer.
  • the active carbon and the acidic gas neutralizer which are added to the exhaust gas are recovered with the filter 12, and introduced into the waste crushed with the crusher 6.
  • the exhaust gas that has passed through the bag filter 12 is discharged into atmosphere by the fan 13.
  • the raw material grinding unit B includes a waste tank 14, a component modifier tank 15, a hot air oven 16, a grinding machine 17, a sieve 18, an active carbon addition equipment 19, an acidic gas neutralizer addition equipment 20, a bag filter 21 and a fan 22.
  • the waste in the waste tank 14 is conveyed to the grinding machine 17 directly or after drying with the hot air oven 16, and active carbon and acidic gas neutralizer are then added from the active carbon addition equipment 19 and the acidic gas neutralizer addition equipment 20.
  • dioxin is adsorbed onto the active carbon, and also an acidic gas such as hydrogen chloride or sulfur oxide is removed by the acidic gas neutralizer.
  • the waste to which active carbon and acidic gas neutralizer have been added is recovered with the bag filter 21 and is introduced into the waste tank 24.
  • the exhaust gas that has passed though the bag filter 21 is discharged into atmosphere by the fan 22.
  • the component modifier is ground with the grinding machine 17, active carbon and acidic gas neutralizer are added thereto from the active carbon addition equipment 19 and the acidic gas neutralizer addition equipment 20, and the component modifier is recovered with the bag filter 21 and introduced into the component modifier tank 23.
  • the exhaust gas that has passed through the bag filter 21 is discharged into atmosphere by the fan 22.
  • the waste or the component modifier is powderish and the amount of the particles with a diameter of 88 ⁇ m or more is 25% or less, it may not be passed through the grinding machine 17. Further, a bulky product containing iron pieces and the like discharged from the grinding machine 17 is separated with the sieve 18, the sieve-on materials (mainly iron pieces) are recovered in a pit and the sieve-passed materials (mainly raw material dust) are returned to the grinding machine 17.
  • the raw material preparing and blending unit C includes a component modifier tank 23, a waste tank 24 and a blender 25.
  • the respective raw material is extracted from the component modifier tank 23 and the waste tank 24 so as to obtain the target composition, and the raw materials are blended with the blender 25, followed by investigating the components. If the composition does not have the target value, the raw material corresponding to the deficient amount is replenished to conduct fine adjustment.
  • the clinker burning and cooling unit D includes a raw material storage tank 26, a chlorine source addition feeder 27 and an alkali source addition feeder 72 as a chlorine and alkali adjustment equipment, a screw conveyer 28, a rotary kiln 29, a clinker cooler 30, a heavy oil tank 31, a heavy oil pump 32, a burner 33, an active carbon addition equipment 54, an acidic gas neutralizer addition equipment 55, a bag filter 56, a fan 71, a cooling fan 66 and a primary air fan 67.
  • the raw material prepared to the target composition in the blender 25 is conveyed to the raw material storage tank 26 in the burning step, and conveyed, together with the chlorine source discharged from the chlorine source addition feeder 27 or the alkali source discharged from the alkali source addition feeder 72, in a rotary kiln 29 from a kiln inlet hood 70 by a screw conveyer 28.
  • the raw material is heated to a temperature of 1250-1450°C in the rotary kiln 29 to form a clinker, which is cooled in a clinker cooler 30.
  • dioxin contained in the raw material is heated to a temperature of 1,250-1,450°C, dioxin is not contained in the clinker.
  • the alkali and chlorine sources are introduced for the purpose of controlling the chlorine and alkali amount in the clinker.
  • the chlorine source chlorine-containing compounds such as calcium chloride, polyvinyl chloride, flon and halons containing chlorine, hydrochloric acid, and chlorine-containing wastes can be used.
  • alkali source alkali metal compounds such as sodium carbonate, glass cullet, soda ash, alkali feldspar, waste alkali solution, and alkali metal-containing waste can be used.
  • the amount of the chlorine source and the alkali source introduced is adjusted such that the chemical composition of the raw material introduced into the rotary kiln 29 is satisfied with at least one of the following conditions P and Q: P: 0.95 ⁇ R/Cl ⁇ 2.0 Q: 0.0 ⁇ R-Cl ⁇ 1.2 wherein R indicates the content (wt%) of alkali metal atoms in the raw material in terms of Na 2 O and Cl indicates the content (wt%) of chlorine atoms in the raw material in terms of Na 2 O.
  • the chlorine source is added, and in the case that the alkali content is insufficient, the alkali source is added. Further, the amounts of the chlorine source and the alkali source to be added can be finely adjusted by analyzing the chlorine and alkali contents in the clinker discharged from the clinker cooler 30.
  • the adjustment of the chlorine and alkali contents by the chlorine source addition feeder 27 and the alkali source addition feeder 72 in the clinker burning and cooling unit D is conducted to efficiently produce alkali metal chlorides such that chlorine and alkali metal are efficiently removed.
  • the alkali metal in the raw material introduced into the rotary kiln 29 is bonded with chlorine during burning in the rotary kiln 29 to form a chloride having high vapor pressure.
  • the chloride formed volatilizes in the exhaust gas during burning by the rotary kiln 29. Accordingly, the chlorine content and the alkali content in the clinker discharged from the rotary kiln 29 can be decreased to very low level as compared with the chlorine content and the alkali content in the raw material introduced into the rotary kiln.
  • the balance between chlorine and alkali in the raw material introduced into the rotary kiln 29 is finely adjusted within the above-mentioned range of P or Q, so that the chlorine content in the clinker discharged from the rotary kiln is less than 0.1% by weight.
  • the balance between chlorine and alkali in the raw material introduced into the rotary kiln 29 is finely adjusted within the above-mentioned range of P or Q, so that the alkali metal content in terms of Na 2 O in the clinker discharged from the rotary kiln is less than 1.0% by weight.
  • the chlorine content in the rotary kiln raw material is 3% by weight or more, and the balance between chlorine and alkali in the raw material introduced into the rotary kiln 29 is in a range of 1.0-1.4 as R/Cl or in a range of 0.0-0.7 as R-Cl.
  • the chlorine and alkali components volatilized in the exhaust gas are treated in the exhaust gas treatment unit F.
  • Air for cooling is supplied to the clinker cooler 30 with/through the cooling fan 66 of the clinker cooler 30, a part thereof is supplied to the rotary kiln 29 for burning, and other part thereof is discharged in atmosphere as an exhaust gas with/through a fan 71 after removing dusts with the bag filter 56.
  • the active carbon addition equipment 54 and the acidic gas neutralizer addition equipment 55 are provided, assuming that a gas in the kiln reversely flows in the case, for example, that the fan 41 arranged at the rear stage of a denitration equipment 40 in the exhaust gas treatment unit F as mentioned hereinafter gets out of order.
  • a clinker dust recovered with the bag filter 56 is taken in the clinker tank 57 together with the clinker from the clinker cooler 30.
  • dioxin or the like is contained in the exhaust gas discharged from the clinker cooler 30.
  • active carbon and acidic acid neutralizer are added for treatment to the exhaust gas from the active carbon addition equipment 54 and the acidic acid neutralizer addition equipment 55, and then the dust recovered with the bag filter 56 is supplied to an external heating oven 43 of a dioxin decomposition unit G mentioned hereinafter or the waste yard 1 of the incineration ash drying pre-treatment unit A, and is thermally decomposed or recycled.
  • a heavy oil is transported from the heavy oil tank 31 by the pump 32, is blown into the rotary kiln 29 together with air supplied through a primary air fan 67, and burned by the heavy oil burner 33 with adding a heat-exchanged secondary air in the clinker cooler 30.
  • the raw material is heated to a temperature of 1,250-1,450°C and the raw material is decarboxylated, and then discharged from the rotary kiln 29.
  • the clinker cooled in the clinker cooler 30 is stored in the clinker tank 57 of the product grinding unit E.
  • This product grinding unit E includes, in addition to the clinker tank 57, a gypsum tank 58, a grinding machine 59, a bag filter 60, a fan 61,a cement tank 62 and a feeder 63.
  • the clinker is drawn out of the clinker tank 57, mixed and ground in the grinding machine 59 together with the gypsum discharged from the gypsum tank 58, and then ground to a predetermined specific surface. Thereafter, if necessary, a setting modifier is added through the feeder 63, and cement is produced.
  • the exhaust gas treatment unit F includes a temperature and moisture control equipment 34, a cyclone 35, an active carbon addition equipment 37, an acidic gas neutralizer addition equipment 38, bag filters 36 and 39, a denitration equipment 40, a fan 41, a funnel 42, a cooling fan 53, an aqueous ammonia or urea pouring equipment 64, a pump 65 and a damper 68.
  • an exhaust gas temperature is lowered to 800°C by a kiln inlet hood 70, and the exhaust gas is primarily cooled with air blown by the cooling fan 53, and is secondarily cooled to 300°C or less, preferably 250°C or less, with water in the temperature and moisture control equipment 34 for suppression of re-synthesis of dioxin.
  • the exhaust gas is thirdly cooled to 150-180°C or less, and then enters the bag filter 39 at the second stage after removal of dusts.
  • the course particles separated with the cyclone 35 are again transported to the rotary kiln 29 through the screw conveyer 28.
  • active carbon and acidic gas neutralizer are added, if necessary, from the active carbon addition equipment 37 and the acidic gas neutralizer addition equipment 38 for the purpose of adsorbing HCl and dioxins.
  • the exhaust gas passes through the bag filter 39, separates NO x with the denitration equipment 40, is sucked with the fan 41, and is released in an atmosphere through the funnel 42.
  • the aqueous ammonia or urea pouring equipment 64 and the pump 65 are arranged, if necessary.
  • the bag filter may be one stage, and each equipment of the active carbon addition equipment 37, the acidic gas neutralizer addition equipment 38 and the bag filter 39 may not be arranged.
  • the dioxin decomposition unit G is mainly constituted of an external heating oven 43 and a rotary cooler 44.
  • the dust recovered with the bag filter 36 at the first stage is conveyed to the dioxin heating decomposition unit constituted of the external heating oven 43 and the rotary cooler 44.
  • the dust After decomposing dioxin by heating at a temperature of 350°C or more and simultaneously removing ammonia, the dust is cooled in the rotary cooler 44, and a slurry thereof is formed in the tank 45, and is conveyed to a heavy metal refining unit H.
  • the slurry may be formed in the tank 45 by directly introducing in water without the rotary cooler 44.
  • the dust in the form of a slurry passes through tanks 46 and 47 and is then recovered as a lead product in a filter press 48, and further passes through tanks 49 and 50 and is then recovered as a copper product in a filter press 51, to subject to mine-mouth reduction as a raw material for refining.
  • dioxins are contained in all the lead product, so that a dioxin heat decomposition unit can further be arranged in a step after recovering the lead product.
  • a unit for decomposing dioxin may be arranged in only a step after recovering the lead product. Waste water flown out of the heavy metal refining unit H is made harmless, and is discharged from a tank 52. The acidic gas neutralizer, chlorine sources, and the active carbon containing dioxin, recovered with the bag filter 39 at the second stage is returned to the waste tank 24.
  • Example 1 19.8 8.7 2.0 64.8 0.3 0.13 0.00 0.05
  • Example 2 18.2 9.0 3.2 63.0 0.6 0.21 0.01 0.08
  • Example 3 18.0 10.2 4.9 64.4 1.0 0.18 0.00 0.03
  • C3S C2S C4AF C3A Example 1 52 17 6 20
  • the cement according to the present invention has a strength development ability equal to or more than that of the general Portland cement.
  • the dust recovered with the bag filter 36 was 5 parts by weight per 100 parts by weight of the clinker, and dioxin could be decomposed to be 0.1 ng/g or less.
  • a lead product was obtained in an amount of 4.7 parts by weight, and a copper product was obtained in an amount of 3.6 parts by weight, per 100 parts by weight of the incineration ash.
  • the analytical results are shown in Table 9.
  • cement can be produced using, as raw materials, wastes which have conventionally been disposed of with large expenses, and can effectively be utilized as construction materials. Harmful materials contained in those wastes are made harmless in the cement producing step.
  • cements can be produced by adjusting chlorine and alkali contents in the blended raw material, and for example, even if chlorine-containing wastes such as incineration ash of municipal refuses are used as the raw material, cement can be produced having reduced chlorine content, that does not cause corrosion of reinforcing steels etc.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treating Waste Gases (AREA)
EP99905266A 1998-03-03 1999-02-22 Appareil de fabrication de ciment Expired - Lifetime EP0980852B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5081498 1998-03-03
JP10050814A JPH11246247A (ja) 1998-03-03 1998-03-03 セメント製造装置
PCT/JP1999/000778 WO1999044961A1 (fr) 1998-03-03 1999-02-22 Appareil de fabrication de ciment

Publications (3)

Publication Number Publication Date
EP0980852A1 true EP0980852A1 (fr) 2000-02-23
EP0980852A4 EP0980852A4 (fr) 2000-12-13
EP0980852B1 EP0980852B1 (fr) 2004-04-28

Family

ID=12869245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99905266A Expired - Lifetime EP0980852B1 (fr) 1998-03-03 1999-02-22 Appareil de fabrication de ciment

Country Status (6)

Country Link
EP (1) EP0980852B1 (fr)
JP (1) JPH11246247A (fr)
KR (1) KR100348974B1 (fr)
DE (1) DE69916725T2 (fr)
TW (1) TW445247B (fr)
WO (1) WO1999044961A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316536A2 (fr) * 2001-11-30 2003-06-04 KHD Humboldt Wedag AG Procédé pour reduire l'emission de dioxines et/ou furanes dans des gaz d'échappement dans un installation de fabrication de clinker de ciment
EP1440953A2 (fr) * 2003-01-22 2004-07-28 Taiheiyo Cement Corporation Procédé et dispositif pour le traitement de gaz d'échappement d'une installation de production de ciment
EP1995223A1 (fr) * 2007-04-25 2008-11-26 Calstar Cement, Inc. Conversion de centrale thermique au charbon pour co-générer du ciment
US7927417B2 (en) 2008-02-04 2011-04-19 Capitol Aggregates, Ltd. Cementitious composition and apparatus and method for manufacturing the same
WO2021069386A1 (fr) * 2019-10-10 2021-04-15 Thyssenkrupp Industrial Solutions Ag Séparation d'eau à partir des gaz de fumée issus d'installation de cuisson de clinker

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KR100492621B1 (ko) * 2002-09-11 2005-06-03 한국지질자원연구원 생활폐기물 소각재와 하수 슬러지를 이용한 칼슘클로로알루미네이트 클링커 제조방법
US7390357B2 (en) * 2002-10-02 2008-06-24 F.L.Smidth A/S Method and plant for manufacturing cement clinker
JP4872316B2 (ja) * 2005-11-10 2012-02-08 三菱マテリアル株式会社 セメント焼成プラントにおける有価元素の回収方法および回収システム
JP2007161523A (ja) * 2005-12-13 2007-06-28 Taiheiyo Cement Corp セメント製造方法
KR100724338B1 (ko) * 2005-12-23 2007-06-04 쌍용양회공업(주) 농업용 멀칭 폐비닐의 재활용 방법 및 이에 사용되는 장치
TWI401232B (zh) * 2009-09-01 2013-07-11 Univ Nat Ilan 水泥生料及利用該水泥生料製作成水泥熟料的製法
WO2011096604A1 (fr) * 2010-02-05 2011-08-11 한국지질자원연구원 Laitier d'aluminate de calcium utilisant des déchets et procédé de fabrication associé
TWI632958B (zh) * 2016-09-09 2018-08-21 永續發展股份有限公司 廢棄物處理再利用系統
DE102020128894A1 (de) 2020-11-03 2022-05-05 Harald Kurkowski Baustoff und Verfahren zum Herstellen eines derartigen Baustoffes
KR102618724B1 (ko) * 2021-10-28 2023-12-29 성신양회 주식회사 선회식 연소기의 배출가스와 소성로 배출가스를 이용한 시멘트 제조방법

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JP3461019B2 (ja) * 1993-12-10 2003-10-27 太平洋セメント株式会社 環境調和型水硬性組成物及びその製造方法
JP3703111B2 (ja) * 1995-10-25 2005-10-05 太平洋セメント株式会社 セメント製造方法及び製造装置
JP3810472B2 (ja) * 1996-03-28 2006-08-16 太平洋セメント株式会社 セメントの製造方法

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US5365866A (en) * 1992-12-08 1994-11-22 Southdown, Inc. Method and apparatus for treating exhaust gases from preheater and preheater/precalciner kilns burning hazardous waste fuels

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See also references of WO9944961A1 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316536A2 (fr) * 2001-11-30 2003-06-04 KHD Humboldt Wedag AG Procédé pour reduire l'emission de dioxines et/ou furanes dans des gaz d'échappement dans un installation de fabrication de clinker de ciment
DE10158968A1 (de) * 2001-11-30 2003-06-12 Kloeckner Humboldt Wedag Verfahren zur Emissionsminderung der Abgasschadstoffe Dioxine und/oder Furane bei einer Zementklinkerproduktionslinie
EP1316536A3 (fr) * 2001-11-30 2005-05-11 KHD Humboldt Wedag AG Procédé pour reduire l'emission de dioxines et/ou furanes dans des gaz d'échappement dans un installation de fabrication de clinker de ciment
DE10158968B4 (de) * 2001-11-30 2010-01-14 Khd Humboldt Wedag Gmbh Verfahren zur Emissionsminderung der Abgasschadstoffe Dioxine und/oder Furane bei einer Zementklinkerproduktionslinie
EP1440953A2 (fr) * 2003-01-22 2004-07-28 Taiheiyo Cement Corporation Procédé et dispositif pour le traitement de gaz d'échappement d'une installation de production de ciment
EP1440953A3 (fr) * 2003-01-22 2006-11-15 Taiheiyo Cement Corporation Procédé et dispositif pour le traitement de gaz d'échappement d'une installation de production de ciment
EP1995223A1 (fr) * 2007-04-25 2008-11-26 Calstar Cement, Inc. Conversion de centrale thermique au charbon pour co-générer du ciment
US7927417B2 (en) 2008-02-04 2011-04-19 Capitol Aggregates, Ltd. Cementitious composition and apparatus and method for manufacturing the same
US8079538B2 (en) 2008-02-04 2011-12-20 Capitol Aggregates, Ltd. Cementitous composition and apparatus and method for manufacturing the same
US8857620B2 (en) 2008-02-04 2014-10-14 Capitol Aggregates, Inc. Cementitious composition and apparatus and method for manufacturing the same
WO2021069386A1 (fr) * 2019-10-10 2021-04-15 Thyssenkrupp Industrial Solutions Ag Séparation d'eau à partir des gaz de fumée issus d'installation de cuisson de clinker

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EP0980852A4 (fr) 2000-12-13
DE69916725D1 (de) 2004-06-03
KR20010012225A (ko) 2001-02-15
JPH11246247A (ja) 1999-09-14
TW445247B (en) 2001-07-11
KR100348974B1 (ko) 2002-08-17
WO1999044961A1 (fr) 1999-09-10
DE69916725T2 (de) 2005-03-31
EP0980852B1 (fr) 2004-04-28

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